Subchapter III. Financing of Retirement Benefits. § 1–721. Limitation on investment of Retirement Funds. § 1–722. Determination of federal and District of Columbia payments to the Funds. § 1–723. Information about retirement programs. § 1–724. Appropriations authorized as payments to the Funds. § 1–725. Reduction in federal payment to Police Officers and Fire Fighters’ Retirement Fund resulting from disability retirements.